Method AltCommunicate

examples/server.java:372–435

(Socket inSocket,
            InputStream clientIn, 
            OutputStream clientOut)

    } /* end Communicate() */
    
    public static int AltCommunicate(Socket inSocket,
            InputStream clientIn, 
            OutputStream clientOut)
    {
        long maj_status = 0;
        long[] min_status = {0};
        int[] conf_state = {0};
        int[] qop_state = {0};
        int err = 0;
        gss_buffer_desc in_buf = new gss_buffer_desc();
        gss_buffer_desc out_buf = new gss_buffer_desc();
        gss_buffer_desc mic_buf = new gss_buffer_desc();
        byte[] messageBuffer = null;

            /* Receive the message token */
            messageBuffer = Util.ReadToken(clientIn);

            if (messageBuffer != null) {
                gsswrapper.setDescArray(in_buf, messageBuffer);
                in_buf.setLength(messageBuffer.length);
            }
            
            /* Unwrap token */
            maj_status = gsswrapper.gss_unseal(min_status, context,
                    in_buf, out_buf, conf_state, qop_state);

            if (maj_status != GSS_S_COMPLETE) {
                Util.displayError("unwrapping token, gss_unseal", 
                                  min_status, maj_status);
                return -1;
            } else if (conf_state[0] == 0) {
                System.out.println("Warning!  Message not encrypted.");
            }

            System.out.println("Received message: " + out_buf.getValue());

            /* Produce a signature block for the message */
            maj_status = gsswrapper.gss_sign(min_status, context,
                    GSS_C_QOP_DEFAULT,
                    out_buf, mic_buf);

            if (maj_status != GSS_S_COMPLETE) {
                Util.displayError("producing signature block, gss_sign", 
                                  min_status, maj_status);
                return -1;
            }

            /* Send signature block to client */
            byte[] temp_token = new byte[(int)mic_buf.getLength()];
            temp_token = gsswrapper.getDescArray(mic_buf);
            err = Util.WriteToken(clientOut, temp_token);

            if (err != 0) {
                System.out.println("Error sending signature block to client");
                return -1;
            }
        
        gsswrapper.gss_release_buffer(min_status, in_buf);